Shaving assistant composition



hanced through United States Patent COMPUSITIUN assiguor to Clairol luacorporation of Dela- This invention relates to shaving assistingcompositions. More particularly it relates to shaving compositions foruse with razor and blade in shaving face, legs, under arms or otherportions of the body from which it may be desirable to remove hair.

Many disadvantages are attendant the use of shaving soaps, creams, andaerosol foams. For instance, these shaving aids do very little in theway of acting as lubricants to assist the process of shaving. Inaddition, be cause they contain ionic emulsifiers, they ernulsifyprotective skin oils, leaving the skin dry, unprotected and subject toirritation from the emulsifiers, ing action of the razor blade and fromperspiration.

Accordingly, it is an object of the present invention to provide shavinglotions or creams which have unique shaving properties.

It is another object of the present invention to provide shaving creamsor lotions which:

(1) Will deposit a protective layer to enhance the protective action ofskin oils;

(2) Will not emulsify protective skin contribute to shaving withoutirritation ing of the skin; and

(3) Will contribute superior lubricity to minimize razor drag and theresultant irritation which can be caused by this means.

These together with other objects and advantages will becomesubsequently apparent from the following description and claims.

It has now been found that the objects of the present invention can beachieved by formulating as a shaving assisting composition a non-ionicemulsion of a dimethylpolysiloxane fluid containing a non-ionic surfaceactive agent, e.g., a polyoxyethylene derivative and a watersolublepolymer of acrylic acid crosslinked with a polyallyl ether of sucrose.In the preferred forms of this is also non-alcoholic in charactergel-like cream or a lotion having oils and thereby and without dryand isformulated into a thixotropic properties.

It is known in the prior art to use dimethylsiloxane fluids in cosmeticylpolysiloxane fluids, etc. lubricity of the It has also been found thatthe dimethylpolysiloxane fluids may be enthe use of a non-ionicpolyoxyethylene derivative surface active agent in conjunction with thewater-soluble polymers of acrylic acid crosslinked with a polyallylether of sucrose.

The silicone fluids utilized in the present invention belong to a classof polymeric organosiloxanes composed of multiples of the structure:

weight of the finished 3,3l4,857 Patented Apr. 118, 1967 endblocked withthe group:

IiCHa They are generally employed in the form of an oil-inwater emulsionand constitute from about 3 to 7% by composition.

The dimethylpolysiloxane liquids of choice are those of this type aresold by the Union Carbide Corp. under the designation L-45 fluids. TheL-45 liquids having a viscosity of less than 200 centistokes aregenerally not preferred because they do not impart maximum lubricity tothe compositions. L45 fluids with viscosities above 500 centistokes arealso generally not desired because of their sticky nature which make theproduct unsatisfactory from a cosmetic elegance point of view.

The non-ionic surfactants that are useful for the purposes of thepresent invention are of the polyoxyethylene derivative type and aregenerally used in an amount equal to not more than 10% by Weight of thedimethylpolysiloxane fluid. Of special utility are ethers formed fromlong chain fatty alcohols and alkylene oxides. Typical of these arecommercially available products sold under the designation Brij 30 andBrij 35 which are ethers formed by condensing lauryl alcohol withethylene oxide. Brij 30 is a liquid, oily product identified aspolyoxyethylene (4) lauryl ether. Brij 35, on the other hand, is a waxy,solid product designated as polyoxyethylene (23) lauryl ether. Thenumbers in parentheses indicate the number of oxyethylene groups in eachpolyether.

The water-soluble polymer of acrylic acid crosslinked with polyallylether of sucrose (hereinafter referred to as PAS) that is utilized inthe present invention is preferably utilized in neutralized to a pH of6.5 to 7.2) with a mild amine, such as triethanolamine.

in accordance with U8. Patent No. 2,798,053. Carbopol 934, which isparticularly suitable for use in the present invention, is identified asa water-soluble polymer of acrylic acid crosslinked with 1% of polyallylether of sucrose having an average of about 5.8 allyl groups for eachmolecule of sucrose.

The vehicle of the present invention is preferably water. The alcoholsof prior art compositions are thus dispensed with.

The compositions of the present invention consist essentially of thefour ingredients discussed above. ever, other ingredients, such ashexachlorophene, i.e., 2,2 methylenebis[3,4,6-trichlorophenol], ordiaphene, i.e., a mixture containing of 3,5,4-tribomosalicylanilide and20%, 5,4dibromosalicylanilide, or other bacteriostatic agents which helpminimize infection, or materials, such as allantoin which help promotehealing may also be incorporated in these compositions.

The ingredients of the com-positions of the present invention may varyin quantities over a considerable range. The following table illustratesthe ranges in percentages by weight of the various ingredients:

Ingredients which may used with formula:

Range of percentage by weight that may be used The compositions of theinstant invention may be prepared in several ways. In one procedure youemulsify the silicone oil with the non-ionic surfactant using 30% of thetotal water to be used to give an oil-in-water emulsion. The PAS (e.g.,Carbopol 934) is dispersed in the remaining water, and then neutralized,for example, with triethanolamine to a pH of 6.5-7.2. The latter is thenblended with the oil-in water emulsion prepared above.

The uniqueness and the synergistic action of the components of thepresent composition are illustrated by the following facts:

(1) The blend of dimethylpolysiloxane fluid emulsified with non-ionicsurfactants and partially neutralized PAS (e.g., Carbopol 934) is muchmore effective in fulfilling the objects of this invention than are thedimethylpolysiloxane emulsion itself or the silicone fluid itself or thesilicone fluid blended with the partially neutralized PAS.

(2) The composition of this invention is much more effective thanconventional shaving cream formulations in fulfilling the objects ofthis invention.

Verification of the outstanding ability of the composition of thisinvention to fulfill the objects of this invention as previously statedhas been obtained by actual shaving tests performed by numerous men andwomen who compared the composition of this invention with the usualcommercially available shaving products.

The compositions of the present invention have the further advantages ofbeing clear, transparent products. This is an advantage in that it ispossible to see and avoid pimples and skin abrasions during shaving.

The following examples are further illustrative of the presentinvention. It should be understood, however, that the invention is notlimited thereto. The products identified in the examples as L45 fluid,Brij 30, Brij 35 and Carbopol 9 34 have already been described in thespecification.

Example 1 Following the procedure outlined above the followingcomposition was prepared:

Q8 to 100 with H O. pH maintained between 6.5 and 7.2.

Example 2 In this example the procedure and ingredients were identicalwith those of Example 1, excepting that in place of Brij 30, Brij 35 wasused as the non-ionic surfactant.

Example 3 Following the same procedure referred to in Example 1, thefollowing composition was prepared:

QS to with H O. pH maintained between 6.5 and 7.2.

Example 4 The procedure of Example 3 is followed except that in place ofBrij 30, Brij 35 was used as the non-ionic surfactant.

Although the invention has been described with reference to specificforms thereof, it will be understood that many changes and modificationsmay be made without departing from the spirit of this invention.

What is claimed is:

1. A shaving assisting composition consisting essentially of from about3 to 7% by weight of the total composition of a polymericdimethylpolysiloxane in the form of an oil-in-water emulsion emulsifiedwith an amount not greater than about 10% by weight of saiddimethylpolysiloxane of a non-ionic polyethoxylated higher fatty alcoholsurfactant blended with from 0. 2 to 1.0 by weight of a water-solublepolymer of acrylic acid crosslinked with a polyallyl ether of sucrose ingel form, said acrylic polymer being neutralized with triethanolamine toa pH of about 6.5 to 7.2 said non-ionic surfactant constituting betweenabout 0.3 to 0.7 percent by weight of the total composition.

2. A composition according to claim 1 wherein said polymericdimethylpolysiloxane has a viscosity between 100 to 500 centistokes.

3. A composition according to claim 2 including from about 95.3 to 89.9percent by weight of water.

4. A composition according to claim 3 wherein said polymericdimethylpolysiloxane has a viscosity of about 350 centistokes.

References Cited by the Examiner UNITED STATES PATENTS 2,980,655 4/1961Glass et al. 167-85 3,072,536 1/1963 Pye 167--85 3,136,696 6/1964Harrison 167-90 3,185,627 5/1965 Kass 167-91 FOREIGN PATENTS 878,96910/1961 Great Britain.

OTHER REFERENCES Sagarin: Cosmetics Science and Technology, IntersciencePublishers, Inc., New York, 1957, pages 134-135.

ALBERT T. MEYERS, Primary Examiner. JULIAN S. LEVITT, Examiner. DALE R.MAHANAND, Assistant Examiner.

1. A SHAVING ASSISTING COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT3 TO 7% BY WEIGHT OF THE TOTAL COMPOSITION OF A POLYMERICDIMETHYPOLYSILOXANE IN THE FORM OF AN OIL-IN-WATER EMULSION EMULSIFIEDWITH AN AMOUNT NOT GREATER THAN ABOUT 10% BY WEIGHT OF SAIDDIMETHYLPOLYSILOXANE OF A NON-IONIC POLYETHOXYLATED HIGHER FATTY ALCOHOLSURFACTANT BLENDED WITH FROM 0.2 TO 1.0 BY WEIGHT OF A WATER-SOLUBLEPOLYMER OF ACRYLIC ACID CROSSLINKED WITH A POLYALLYL ETHER OF SUCROSE INGEL FORM, SAID ACRYLIC POLYMER BEING NEUTRALIZED WITH TRIETHANOLAMINE TOA PH OF ABOUT 6.5 TO 7.2 SAID NON-IONIC SURFACTANT CONSTITUTING BETWEENABOUT 0.3 TO 0.7 JPERCENT BY WEIGHT OF THE TOTAL COMPOSITION.